.内容 {
    height: 100%;
    overflow: scroll;
    padding: 6px;
    .注册登录 {
        display: flex;
        padding: 5px;
        margin-top: 10px;
        .开始注册,
        .停止注册 {
            flex: 1;
            width: 40%;
            border: none;
        }
    }
    .验证 {
        position: relative;
        .验证码按钮 {
            position: absolute;
            top: 6px;
            right: 4px;
            padding: 5px;
            width: auto;
        }
    }
}